How many significant figures should be present in the answer of the following calculations?
(i) 
(ii) 
(iii) 0.0125 + 0.7864 + 0.0215
(i) 
= 1.648
Least precise number of calculation = 298.15
Number of significant numbers in result = Number of significant figures in least precise number = 2
Correct Answer = 1.65
(ii) Calculated Answer = 26.82
Least precise number of calculation = 5.364
Number of significant numbers in result = Number of significant figures in least precise number = 3
Correct Answer = 26.820
(iii) Calculated Answer = 0.8204
Number of significant numbers in result = Number of significant figures in least precise number = 4
Correct Answer = 0.8204
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